The half-century history of the Dockside condominium tower in downtown Charleston reached another seminal moment with the urgent order for residents to vacate.  City officials came close to such a call two years ago. This time, further details and a deeper understanding of dangerous structural issues in the 18-story building forced the issue. An engineering firm hired by residents said “the safety margin is too low” for residents to remain.    Read the article…………………………….